Title:
METHOD FOR MANUFACTURING RECYCLED PULP FROM USED SANITARY ARTICLE
Document Type and Number:
WIPO Patent Application WO/2016/059964
Kind Code:
A1
Abstract:
The present invention addresses the problem of efficiently manufacturing a recycled pulp from a used sanitary article, said recycled pulp being reusable for sanitary articles and having an ash content and antibacterial properties both meeting the standards for sanitary articles. A method for manufacturing a recycled pulp reusable for sanitary articles by recovering a pulp fiber from a used sanitary article that contains the pulp fiber and a high water-absorbing polymer, said method comprising an ozone treatment step for immersing the used sanitary article or pulp fiber in an ozone-containing aqueous solution and thus disintegrating the high water-absorbing polymer contained in the used sanitary article or sticking to the pulp fiber, characterized in that the used sanitary article or pulp fiber is treated with a cationic antibacterial agent before, after or together with the ozone treatment step.
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Inventors:
KONISHI TAKAYOSHI (JP)
HIRAOKA TOSHIO (JP)
HIRAOKA TOSHIO (JP)
Application Number:
PCT/JP2015/077358
Publication Date:
April 21, 2016
Filing Date:
September 28, 2015
Export Citation:
Assignee:
UNICHARM CORP (JP)
International Classes:
D21C5/02; A61L2/16; A61L11/00; B09B3/00; C08J11/16; D21C9/00; A61L101/32
Domestic Patent References:
| WO2014168179A1 | 2014-10-16 | |||
| WO2014007105A1 | 2014-01-09 |
Foreign References:
| JPH069721A | 1994-01-18 | |||
| JPH04317785A | 1992-11-09 | |||
| JP2001031078A | 2001-02-06 | |||
| JP2001047023A | 2001-02-20 |
Other References:
See also references of EP 3208377A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
Aoki 篤 (JP)
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